How to calculate submarine pressure hull strength

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A Drawing of submarine hull

Min wall thickness, T: mm;
Radius, R: sm;
Length, L: sm;
Poisons Ratio: (0.3 for steel);
Modulus of Elasticity, GPa: (210 for steel);

The hull is cylindrical (a tank)

By Roark, FORMULAS FOR STRESS AND STRAIN, 1961:

Maximum Pressure 00 PSI = 00 ATM.
Crush depth 00 meters.

By Flugge, HANDBOOK OF ENGINEERING MECHANICS, 1962:

Maximum Pressure 00 PSI = 00 ATM.
Crush depth 00 meters.

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